Portable talking machine



Jly l14, 1931. H. l. KtJcHENMElsTI-:R

PORTABLE TALKING MACHINE Filed may 15. 1929 Ffgz.

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Patented July 14, 1931 i 'fw UNITED STATES HEINRICH KGIIENMEISTER, OF-BERLIN, GERMANY PORTABLE TALKING MA CHINE 3 y i Application led May 15, 1929, Serial VNo. 363,291, and in Germany April 7, 1928.

M invention relates to portable talking macliines of the type in which the sound box is moved into active position from a recess in K, the case and it is an object of my invention to perform this without detaching the sound arm. To this end I provide a bearing for the sound arm below the top plate of thecase in which bearing the sound arm is rocked lv10 into active and inactive position.

The bearing is fixed and the sound arm is preferably made with a kink permitting the sound box to be moved from its inactive into M its active position by rocking the arm "I5 through about 180 degs. When the case is closed the needle holder is directed upwardly blt does not interfere with the closing of the li Y The space available is utilized to perfec- YU tion by providing the bearing for the sound arm and the recess or compartment in which the sound arm is concealed when the case is closed, in the opening of the sound passage. With a sound arm arranged as described y the brake lever for the record platemay be placed so with respect to the sound arm as to release the brake automatically. when the sound box is placed in position on the record. ,W While the machine is playing the brake is held released by a detent which may be op-v eratively connected with the sound arm so asl to be released by the sound arm at the end of the performance so that the brake is applied r i, to the record plate. Means must be provided for adjusting the detent as the position of the starting groove in the record varies.

The shaft ,for winding the motor is arranged in inclined position and so that its .A end, Without interfering with the sound arm in its inactive position, 1s arranged in the top plate of the case in close vicinity to the opening of the sound passage. Preferably the y end of the shaft is tapped for the reception for the threaded end of the crank.

In order to facilitate the operation of the crank its arm is arranged at an obtuse angle to the axis of the crank. 1

In the accompanying drawings a portable i ,I talking machine embodying my invention Yis illustrated by way of example.

Fig. 1 being an elevation, and

Fig. 2 being a plan view of the machine.

Referring now to the drawings, 1 is a case, 2 is a motor in the case, 19 is the shaft for winding the motor, 18 is the crank, 3 55 is the record plate, 3a is the sound arm, 3b is the sound box with the needle, 30 is a kink in the sound arm, 7 is the top plate of the case 1, 4 is a bearing in which the sound arm 3a is carried to rock, 5 is the sound 60 passage which opens into the bearing 4 from below, extends round the motor 2 and opens in a compartment 6 in which the bearing 4 is arran ed.

8 is pin just below the top plate 7, 9/11 65 is a bell crank lever fulcrumed on the pin, 10 is a spring tending to pull the arm 9 into Contactv with the edge of the record plate 3, 12 is a projection on the arm 11 which is adapted to be engaged by the kink 30 of the sound arm 3a, 13 is a detent adapted to engage a flat de ression in the lever arm 11 under the action of a spring 14, 15 is a lever held by friction on the pin of the detent 13, 16 is a projection at the end of 75 thelever, and 17 is a check on the sound arm 8a which is Vadapted to engage the projection 16 on the llever 15.

As will appear from Fig. 1, the winding shaft-j19 is `at an angle to the top plate 7 80 and projects from the the top plate nearV the compartment 6'but without crossing the path of the sound arm 3a. The .crank 18 is screwed into the shaft 19 and its `arm is at an obtuse angle to the axis of the crank.

In itsinactive position the sound arm 3a' is turned back into the lcompartment 6 about its bearing 4 and is below the top plate 7, as shown in Fig. 2. The needle holder of the sound box 37) is then in such a position 90' as not to interfere with the closing of the lid, not shown. To move the sound arm 3a into active position as shown in Fig. 1, it is raised about its bearing 4 through about degs. and as it is kinked at 3c the sound 95 box 3b is held above the top plate 7. The sound arm is now turned toward the recordl plate 3 until the needle at thesound box engages in the first groove of the record and the sound arm strikes the projection l2, 10

causing the arm 9 to release the record plate 3 and allowing the motor 2 to start. At the same time the detent 13 Linder the action of its spring 14 engages the depression in the arm 11 and holds the brake in its released position until upon further movement of the sound arm about its axis the check 17 engages t-he projection 16 on the lever 15 and throws out the detent against its spring 14 so that the brake arm 9 is again applied to the record plate 3. Any variations in the position of the grooves in the several records may be made up for by adjusting the lever on the detent 13 with which it is connected by friction, as mentioned, the needle on the sound box being inserted in the innermost groove andthe lever 15 being moved until it engages the check 17.

The opening for the crank shaft 19 is not exposed so that penetration of foreign matter is prevented by the lidof the case.

I claim:

1. A portable talking machine comprising a casing, a .compartment in said casing, a tone arm, said tone arm being bent to form two arms at right angles to each other, the end of one of said arms being connected to a fixed joint located at a point adjacent the upper end of said compartment, said last-named arm being rotatable at said joint about a horizontal axis, said horizontal axis being rotatable about a fixed vertical axis.

2. A portable talking machine including a casing, a compartment in said casing, a universal joint xed adjacent the upper end of said compartment, a tone arm connected at one end to said universal joint and rotatable at said universal joint about a horizontal axis which is rotatable about a fixed vertical axis, said tone arm extending horizontaily from said universal joint and then through two right angle turns perpendicular to each other.

3. In a portable talking machine, a casing, a top plate on said casing, a sound passage and a compartment, into which said sound passage opens in said casing, a universal joint immovably fixed below said top plate adjacent the upper end of said compartment, a tone arm connected at one end to said joint movable at said joint about al horizontal and a fixed vertical axis, said arm extending from said joint through at i least two right angles, the portion of the arm before and the portion of the arm beyond said right-angled turns being perpendicular to one another whereby said two apms may be rotated into or out of said compartment.

4. A portable talking machine comprising a case having a compartment, a sound arm, a record'plate, a bearing for said sound arm about which it may be rocked into said compartment into its inactive position, a brake lever adapted to engage said record plate,

means for applying said lever to said plate, and a check on said sound arm adapted to move said brake arm into inactive position with respect to said record plate when said sound arm is moved into active position.

5. A portable talking machine comprising a case having a compartment, a sound arm, a record plate, a bearing for said sound arm about which it may be rocked into said compartment, a brake lever .adapted to engage said record plate, means for applying said lever Vto said plate, means operatively connected with said sound arm ,for holding it disengaged from said plate, a detent for holding said brake arm in its disengaged position, and a check on said sound arinfor throwing out said detent from said brake arm.

6. A portable talking machine .comprising a case having a compartment, a sound arm, a record plate, a bearing for said sound arm aboutwhich it may be rocked into said compartment, a brake for said record plate, a detent for holding said brake in inactive position with respect to said plate, an adjustable arm on said detent, and a checkon said sound arm adapted to engage vsaid arm.

The foregoing specification signed at Amsterdam, Netherlands, this 18th day of April, 1929.

HEINRICH I. KUCIIENMEISTER, 

